Which are true of an enzyme? It is a catalyst. It increases reaction rates. It decreases reaction rates. It decreases activation energy.

By knowing the traits of the parents, it is often possible to predict the physical appearance of their offspring. Below is information about two parents: B=brown eyes (dominant trait) b=blue eyes (recessive trait) Two hybrid parents (Bb)have a child. What is the probability that their child will have blue eyes? 25% 50% 75% 100%

Density, and dispersion have an effect on reproduction and population size. True False

Vitamin D is an essential vitamin. True False

Which muscle cell type has visible striations but is not under voluntary control? smooth skeletal cardiac

Which of the following describes the movement of ions by the sodium -potassium pump? Potassium is moved out of the cell and sodium is moved into the cell. Potassium is moved out of the cell. Sodium is moved into the cell Potassium is moved into the cell.

Question 19 of 32 Which question would most likely be studied by a biologist? A. What causes cancer cells to grow uncontrollably? B. How can cancer-causing substances be regulated? C. How can a drug that treats cancer be synthesized? D. How much ultraviolet radiation passes through the atmosphere?

How are asexual reproduction and sexual reproduction different?

Plants are primary producers . Which term also refers to plants? autotrophs heterotrophs primary consumers

The main shaft-like portion of a long bone is the epiphysis. articular cartilage periosteum diaphysis.

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Which one of the following groups is composed of prokaryotic cells? View Available Hint(s) animals protists bacteria fungi

Which of the following is NOT a loose connective tissue? elastic cartilage areolar reticular adipose

X What structure combines together to create DNA? Sugar molecules Hydrogen bonds Nucleotides C Amino acids

A species with an initial population of 120 is growing in an environment where the carrying capacity is 750. After 3 years the population is up to 450 Use a logistic function to estimate the population after 5 years . Round to the nearest whole number. $Population=[?]$ individuals.

Multiple Choice Question Secretory IgA is NOT found in which of the following fluids? Tears Mucus Colostrum Stomach acid Saliva

Which statements are true about bacteria? (Select all that apply) They were one of the first life forms on Earth Their total biomass is greater than that of all plants and animals combined Some are multicellular They only live in human bodies.

Match each example on the left to the type of reproductive barrier on the right. A desert keeps frogs on either side from mating with one another. Female spring peeper frogs only mate with males that make a a. behavioral barrier b. physical barrier c. geographic barrier

Which of the following macronutrients is the preferred fuel for the brain and red blood cells? A proteins B lipids C water D carbohydrates E proteins and lipids

The technique developed by Hans Christian Gram is important for bacterial classification. etiology. identification. epidemiology. isolation.

Elements/metals found in food that regulate body functions Water Minerals Vitamins Carbohydrates